Topic
Butt welding
About: Butt welding is a research topic. Over the lifetime, 7153 publications have been published within this topic receiving 44467 citations.
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TL;DR: In this article, the authors show that reducing the value of P increases the welding speed required for full-penetration, and therefore increases the penetration depth to bead width ratio and the micro-hardness of the weld bead.
Abstract: results show that reducing the value ofP increases the welding speed required for full-penetration, and therefore increases the penetration depth to bead width ratio and the micro-hardness of the weld bead. The butt welding results show that the tensile strength and total elongation properties of the highF (� FH) specimens are approximately three times higher than those of the lowF (� FL) specimens. This is primarily due to the absence of hot cracking in theFH specimens, together with a finer microstructure and a lower level of porosity. This study demonstrates that the effect ofF on the weld bead geometry, microstructure, hot crack susceptibility and mechanical properties is far higher than that ofP. However, the effect ofP on the change of welding speed is higher than that ofF. (doi:10.2320/matertrans.47.1365)
13 citations
Patent•
09 Mar 2005
TL;DR: In this paper, a single power supply twin-wire automatic submerged-arc welding machine, consisting of a welding power and a welding machine is presented, which is suitable for the hard facing and the corrosion resistant surfacing.
Abstract: The utility model relates to a single power supply twin-wire automatic submerged-arc welding machine, comprising a welding power and a welding machine. The welding machine comprises a welding car, a bracket, a welding control box, a dual wire reel, a welding flux bucket, a dual wire feeder and a welding wire guide mechanism. The welding power has the dual purpose outer performance of the flat characteristic and the convex characteristic, which can control the wire feeding speed and sustain the stability of the twin-wire arc. The welding machine has high speed of welding wire filling and melting, fast welding speed and low welding seam heat input, which is suitable for the thick plate weld, the thin plate butt welding, the edge weld, the overlap welding as well as the hard facing and the corrosion resistant surfacing.
13 citations
Patent•
13 Nov 1998
TL;DR: In this paper, the authors proposed a method to identify a leaky point while facilitating formation of a leak detection groove by making the leak detection hole in a sealing plate or a lining material itself.
Abstract: PROBLEM TO BE SOLVED: To identify a leaky point while facilitating formation of a leak detection groove by making the leak detection groove in a sealing plate or a lining material itself. SOLUTION: A sealing plate 22 having a leak detection groove 21 is set to envelop the welding line 41 of lining plates 4 while ensuring watertightness of a lining tank by means of a seal welding 23 and a hermetically sealed leak detection groove 21 is formed. Since the leak detection groove 21 is made in the sealing plate 22 itself, a butt welding single joint using a backing metal can be employed at the weld line 41 between the lining plates 4 or the weld line between the lining plate 4 and a buried metal. Consequently, the quality of welded part is enhanced while shortening the time required for performing the welding and enhancing the quality of welded part.
13 citations
Patent•
07 Jun 1973
TL;DR: In this article, the ends of two pipes or rods to be butt welded are beveled to form a V-shaped groove when abutting opening toward the outer periphery, a ring of metal of corresponding size and V-shape configuration to the groove is positioned within the groove and the ring is forcibly rotated about the axis of the pipe or rod, while compressing the pipes and rods together.
Abstract: The ends of two pipes or rods to be butt welded are beveled to form a V-shaped groove when abutting opening toward the outer periphery, a ring of metal of corresponding size and V-shaped configuration to the groove is positioned within the groove and the ring is forcibly rotated about the axis of the pipe or rod, while compressing the pipes or rods together. The heat of friction fully plasticizes the ends of the pipes or rods and the ring, rotation of the ring ceases and final compression between the pipes effects welding. Alternatively, the ends of the pipes are at right angles to the pipe axis and the ring comprises a short section of pipe corresponding to the two pipes to be butt welded.
13 citations
TL;DR: In this article, the mechanical properties of overlap joints of thin sheets of titanium Grade 2 and of an α/β alloy Ti-6Al-4V are investigated, and the results presented allow a very precise classification of the two materials and should help engineers by indicating the optimum material for any given purpose.
Abstract: Increasing demand for lightweight vehicles as well as for laser welding for automotive technologies in high rate production have pushed the automotive industry to consider the use of expensive lightweight materials with high specific mechanical properties and, as for example titanium, high corrosion resistance. Butt welds have too stringent requirements in relation to laser positioning and clamping methods, so the move to overlap joints is justified. The changes in welding design have to be requalified, in order to determine the geometries that allow the optimum exploitation of the bearing properties of a material. In this paper, the mechanical properties of overlap joints of thin sheets of titanium Grade 2 and of an α/β alloy Ti–6Al–4V are investigated. The results presented allow a very precise classification of the two materials and should help engineers by indicating the optimum material for any given purpose. Ti–6Al–4V offers, for example, the highest strength when statically loaded, while, i...
13 citations